Band element for pneumatic tire and method of making same
CA 2278268 A1 · Owner: Spragg, Charles D. · Inventors: Kirby, James M.; Markow, Edward G.; Spragg, Charles D.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A band element for mounting in the crown portion of a pneumatic tire to provide run flat ability to the tire in the event of loss of air pressure and to provide, increased puncture resistance. The band is formed of flat strips of tape having, fibers embedded in a resin matrix which are twisted and then pultrated to provide, a rectangular cross sectional configuration. The twisted tape is wrapped about a, mandrel and forms either the only layer or the intermediate layer of a , composite band in combination with inner and outer layers of flat tape or wound filament fibers, whereby the fibers in the tape extend across the central axis of the band to reduce, interlaminar sheer. In another …
Read the whole patent
Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed July 20, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 20, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 20, 2021.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.